74AC11138PW

Signal Switches, Multiplexers, Decoders Overview

The Texas Instruments 74AC11138PW is a 3-to-8-line decoder and demultiplexer in the AC logic series. It features eight active-low outputs and three enable inputs to simplify cascading. The device operates on a supply voltage range of 3 V to 5.5 V with a maximum propagation delay of 8.8 ns. It is housed in a 16-pin TSSOP package, supports surface-mount installation, and functions within an operating temperature range of -40 °C to +85 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Designed for high-speed memory decoders and data transmission systems
• Incorporates three enable inputs to simplify cascading
• Provides active-low decoded outputs

Signal Switches, Multiplexers, Decoders Applications

• High-speed memory decoding
• Data transmission systems
• Address decoding

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'PW' confirms the TSSOP-16 package variant rather than other packaging options like PDIP or PWR. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the specified 3 V to 5.5 V supply voltage range and industrial temperature limits.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a low-power CMOS decoder with high-speed performance is required. The AC series offers faster switching speeds compared to standard LS logic while maintaining CMOS power efficiency. The inclusion of multiple enable inputs facilitates complex system expansion without additional gating logic.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74AC family of advanced CMOS logic devices from Texas Instruments. The 74AC11138 specifically addresses the need for efficient address decoding in digital circuits. It serves as a fundamental building block for managing signal routing in microprocessor-based systems and peripheral interfaces.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Compatible substitutes include the SN74HC138 for standard speed applications and the SN74HCT138 for TTL-compatible input levels. Verify pinout consistency and electrical characteristics against the original datasheet before substitution.

Signal Switches, Multiplexers, Decoders FAQ

What is the function of the enable inputs?

The three enable inputs allow the device to be disabled or enabled, simplifying the cascading of multiple decoders for larger address spaces.

Are the outputs active-high or active-low?

The 74AC11138 provides eight active-low decoded outputs.